- Title
- Effect of surface-tailored biocompatible organoclay on the bioavailability and mineralization of polycyclic aromatic hydrocarbons in long-term contaminated soil
- Creator
- Biswas, Bhabananda; Sarkar, Binoy; Faustorilla, Maria Vilma; Naidu, Ravi
- Relation
- Environmental Technology and Innovation Vol. 10, p. 152-161
- Publisher Link
- http://dx.doi.org/10.1016/j.eti.2018.01.013
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2018
- Description
- A surface-tailored organoclay (palmitic acid-tailored Arquad®-modified bentonite, ABP) was prepared for the selective adsorption of cadmium in the presence of polycyclic aromatic hydrocarbon (PAH) contaminants in a long-term contaminated soil. The efficiency of the organoclay (ABP) and the effect of its parent clays were assessed concerning the microbial viability, metal immobilization and PAHs bioavailability and biodegradation in a long-term (70 days) soil incubation study. The surface-tailored organoclay (ABP) increased the bacterial growth by 5-7 fold than the control and parent clay-amended soil. With an increased effect of aging, the ABP immobilized more Cd from the soil solution (2-folds higher than the control soil), and simultaneously increased the bioavailability (1.6-1.8 fold) of low molecular weight PAHs related to the control soil and the parent clay-amended soils. The surface-tailored organoclay (ABP) could also increase the mineralization of ¹⁴C-labeled phenanthrene by ca. 1.3-fold relative to the control experiment under a 25-days of incubation.
- Subject
- surface tailored organoclay; polycyclic aromatic hydrocarbon; bioavailability; biodegradation
- Identifier
- http://hdl.handle.net/1959.13/1406516
- Identifier
- uon:35640
- Identifier
- ISSN:2352-1864
- Language
- eng
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